My problem is I like coding but can’t come up with projects I’m interested in. Everything that comes up exists or can be solved in a much simpler way (often a spreadsheet or an Apple note) that requires no software.
As you become an expert on radio telescope arrays or the sport of curling you'll see the problems that are outside the scope of a spreadsheet. Meanwhile be part of the community surrounding it so they trust you and your understanding.
Otherwise you need a pathbreaking stroke of genius, a mountain of cash to burn, or the willpower and charm to get the world to choose your product app over the other 50 products that are very similar.